According to prosecutors, Best Buy created a repair service on products in the early 2000s and solicited vendors to submit bids on certain parts they wanted to supply for the repair service.

The Coles owned and operated a computer parts distribution company called the Chip Factory, Inc. For about four years ending in August 2007, Best Buy accounted for most of Chip Factory's sales.

But court records showed that the Coles made Chip Factory quote fraudulently low prices in Best Buy's auction system to obtain computer repair parts. After winning bids, the Coles billed Best Buy prices that were higher than the ones quoted in the bidding process.

Over time, prosecutors said the Coles billed Best Buy for more than $41 million than had been agreed to in the bidding process.

A former Best Buy employee, 39-year-old Robert Paul Bossany of Prior Lake, helped carry out the scheme. Bossany pleaded guilty in January 2009 to accepting bribes from Chip Factory and conspiring to defraud Best Buy while working as Best Buy's primary contact with Chip Factory.

The Coles were also convicted of tax evasion.

In a written statement, U.S. Attorney B. Todd Jones said prosecutors will pursue those who try to defraud Minnesota corporations.

"Minnesota is home to a number of Fortune 500 companies. We value these companies for the jobs and revenue they bring to the state," he said. "Contrary to the mistaken belief of some, greed is not a business virtue we value in Minnesota."